Conducted Emissions on DC Power Grids

This paper describes measurements and modelling of conducted emissions in the time and frequency domain to characterize the impact of typical DC/DC converters as found on DC grids for renewable generation. A small demonstration HVDC system with active DC/DC converters was built and measurements taken over a range of load and system voltages. These results were compared with simulation. Results demonstrate that converters operating under normal conditions should not exceed proposed emission standards for active power converters.